2782530 has 48 divisors (see below), whose sum is σ = 7413120. Its totient is φ = 723744.

The previous prime is 2782523. The next prime is 2782567. The reversal of 2782530 is 352872.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2782494 and 2782503.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3511 + ... + 4229.

It is an arithmetic number, because the mean of its divisors is an integer number (154440).

2^2782530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2782530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3706560).

2782530 is an abundant number, since it is smaller than the sum of its proper divisors (4630590).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2782530 is a wasteful number, since it uses less digits than its factorization.

2782530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2782530 is about 1668.0917240967. The cubic root of 2782530 is about 140.6522288015.

The spelling of 2782530 in words is "two million, seven hundred eighty-two thousand, five hundred thirty".